正则表达式验证身份证号码

   <asp:TextBox ID="txtIDCard" runat="server"></asp:TextBox><asp:RegularExpressionValidator
            ID="RegularExpressionValidator1" runat="server" ErrorMessage="*" ControlToValidate="txtIDCard"
            ValidationExpression="\d{17}[\d|X]|\d{15}"></asp:RegularExpressionValidator>